- This article is about the creatures from Zero Mission. For other uses, see Parasite (Disambiguation).
Parasites drop down into a room, and aimlessly hop about unless they see prey. They attach to Samus Aran, causing a large amount of damage to her Power Suit until she obtains the Varia Suit, which protects her from the damage. Parasites are also immune to lava and acid, showing how potent creatures they are despite their small size, and can only be destroyed with Bombs. However, the creatures will detach themselves from a host if the victim leaves their native room.
These parasites are the only known creatures that can destroy a Tangle Vine Fruit. Samus can use this to her advantage by luring the parasites towards a fruit. As the parasites crawl over the organic barrier, it will wither away permanently, opening the passage for Samus.
- The creatures highly resemble Brugs. However, it is currently unknown if the two species are the same or not.